From d090aa77c4d0b31aded37128cae011b882f3dd9b Mon Sep 17 00:00:00 2001
From: Vasily <danilka.pro@gmail.com>
Date: Thu, 3 Dec 2015 03:25:30 +0300
Subject: Added NaCl messaging and clipboard functions

---
 src/utils/copynpaste.cpp | 18 ++++++++++++
 src/utils/process.cpp    | 74 ++++++++++++++++++++++++++++++++++++++++++++----
 src/utils/process.h      | 12 ++++++++
 3 files changed, 99 insertions(+), 5 deletions(-)

(limited to 'src/utils')

diff --git a/src/utils/copynpaste.cpp b/src/utils/copynpaste.cpp
index 1f88d8abf..45729021e 100644
--- a/src/utils/copynpaste.cpp
+++ b/src/utils/copynpaste.cpp
@@ -470,6 +470,24 @@ static bool runxsel(std::string& text, const char *p1, const char *p2)
     return true;
 }
 
+#elif defined __native_client__
+
+#include "utils/process.h"
+
+bool retrieveBuffer(std::string& text, size_t& pos)
+{
+    NaclMessageHandle *handle = naclRegisterMessageHandler("clipboard-paste");
+    naclPostMessage("clipboard-paste", "");
+    std::string response = naclWaitForMessage(handle);
+    text.insert(pos, response);
+    return true;
+}
+
+bool sendBuffer(std::string& text)
+{
+    naclPostMessage("clipboard-copy", text);
+    return true;
+}
 #else
 bool retrieveBuffer(std::string&, size_t&)
 {
diff --git a/src/utils/process.cpp b/src/utils/process.cpp
index 74ac20b53..d3d154270 100644
--- a/src/utils/process.cpp
+++ b/src/utils/process.cpp
@@ -269,13 +269,9 @@ bool openBrowser(std::string url)
     return execFile("/usr/bin/xdg-open", "/usr/bin/xdg-open", url, "");
 }
 #elif defined __native_client__
-#include <ppapi_simple/ps.h>
-#include <ppapi/cpp/instance.h>
-#include <ppapi/cpp/var.h>
 bool openBrowser(std::string url)
 {
-    pp::Var msgVar = pp::Var(std::string("open-browser: ").append(url));
-    pp::Instance(PSGetInstanceId()).PostMessage(msgVar);
+    naclPostMessage("open-browser", url);
     return true;
 }
 #else
@@ -300,3 +296,71 @@ void setPriority(const bool big A_UNUSED)
 {
 }
 #endif
+
+#ifdef __native_client__
+#include <ppapi_simple/ps.h>
+#include <ppapi_simple/ps_event.h>
+#include <ppapi/cpp/instance.h>
+#include <ppapi/cpp/var.h>
+
+#include <mutex>
+#include <condition_variable>
+
+struct _NaclMessageHandle {
+    bool handled;
+    std::string type;
+    std::string message;
+    std::condition_variable condv;
+};
+
+void naclPostMessage(const std::string &type, const std::string &message)
+{
+    pp::Var msgVar = pp::Var(std::string(type).append(":").append(message));
+    pp::Instance(PSGetInstanceId()).PostMessage(msgVar);
+}
+
+void naclMessageHandlerFunc(struct PP_Var key,
+                            struct PP_Var value,
+                            void* user_data)
+{
+    NaclMessageHandle *handle = (NaclMessageHandle *)user_data;
+
+    if (key.type != PP_VARTYPE_STRING || value.type != PP_VARTYPE_STRING)
+        return;
+    if (pp::Var(key).AsString() != handle->type)
+        return;
+
+    handle->handled = true;
+    handle->message = pp::Var(value).AsString();
+
+    handle->condv.notify_one();
+}
+
+NaclMessageHandle *naclRegisterMessageHandler(const std::string &type)
+{
+    NaclMessageHandle *handle = new NaclMessageHandle;
+    handle->handled = false;
+    handle->type = type;
+
+    PSEventRegisterMessageHandler(type.c_str(), naclMessageHandlerFunc, (void *)handle);
+    return handle;
+}
+
+void naclUnregisterMessageHandler(NaclMessageHandle *handle)
+{
+    PSEventRegisterMessageHandler(handle->type.c_str(), NULL, NULL);
+    delete handle;
+}
+
+std::string naclWaitForMessage(NaclMessageHandle *handle)
+{
+    std::mutex mtx;
+    std::unique_lock <std::mutex> lck(mtx);
+
+    while (!handle->handled)
+        handle->condv.wait(lck);
+
+    handle->handled = false;
+    return handle->message;
+}
+#endif
diff --git a/src/utils/process.h b/src/utils/process.h
index 5ceddd032..44c1d2286 100644
--- a/src/utils/process.h
+++ b/src/utils/process.h
@@ -34,4 +34,16 @@ bool openBrowser(std::string url);
 
 void setPriority(const bool big);
 
+#ifdef __native_client__
+
+typedef struct _NaclMessageHandle NaclMessageHandle;
+
+void naclPostMessage(const std::string &type, const std::string &message);
+
+NaclMessageHandle *naclRegisterMessageHandler(const std::string &type);
+void naclUnregisterMessageHandler(NaclMessageHandle *handle);
+std::string naclWaitForMessage(NaclMessageHandle *handle);
+
+#endif
+
 #endif  // UTILS_PROCESS_H
-- 
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